Clam-shell bucket.



N0, 823,015 PATBNTED JUNE 12, 1906 e. H. WILLIAMS.

' CLAM SHELL BUCKET.

APPLIOATIOH FILED MAR. 31. 1905.

4 SHEBTS-SHEBT 1 J B Y 4% K W ATTORNEK PATBNTBD JUNE 12, 1906.

G. H. WILLIAMS. OLAM SHELL BUCKET. pruoumx FILED HA3. 31, nos,

VENTOR. ijwlm g I 4s ATTORNEK WITNESSES: kw 3 PATBNTED JUNE 12, 1906.

G. H. WILLIAMS.

SLAM SHELL BUOKBT.

APPLIGATIOH FILED HAB.31,1905.

4 SHEETSSHEET WITNESSES:

A TTORNE K "FM .M

No. 823,015. PATENTED JUNE 12, 1906. G. H, WILLIAMS.

SLAM SHELL BUCKET.

APPLIUATION FILED MAB.31,1905

4 SHEETS-SHEET 4 WITNESSES.

--with reference to an improve GURDON H. WILLIAMS,

PATENT OFFICE.

0F CLEVELAND, 01110.

CLAM-SHELL BUCKET.

Ho. seams.

Specification of Letters Patent.

Patented June 12, 1906.

Application flled March 31, 1906. Serial No. 253.026.

To all whom it may concern:

Be it known that LGunDoN H. WiLL siis, a, citizen of the United States, and a resident of Cleveland, county of Ouyohoge, and State of Ohio; have invented a new and useful Iniproveinent the following is a specification, the principle of the'invention being herein explained and the best mode in which I have contenipletcd ap'glying that principle, so as to distinguish it om other inventions.

M invention relates to an improved chunshel bucket, and particularly to a device of this character inwhich the power for opening and closing the bucket is generated upon or in the near vicinit of the bucket itself. The

advantage of suci a. bucket and the means embodied therein are hereinafter fully described and such means particularly pointed out in the claims.

The "annexed drawings and the following description set forth in detail certain mech enisin embodying; the invention, such disclosed means constituting but one of various mechanical Forms in which the principle oi" the invention may be used.

In said annexed drawings, Figure 1 represents a side clcv atlon of my improved chi-in shell bucket with the scoop rnclnhers closed.

Fig. 2 represents an and elevation. Fig. 3 represents a. side elevation with the scoop men's here Open. Fig. 4 re resents n. plsn view, and Fig. 5 represents a. roken enlarged side elevation of a part of the operating mechanism.

My invention embodies the use of a. motor ass. substitute for cables which have heretofore been generally used for opening and closing the scoop members of clomshell bu ck cts. A motor may be time used in connection with anv of the present forms of buckets;

but 1 shall describe its use herein, isrticulerly operating mechanism. designed to he on improvement 11 )0 the mechanism shown, described, and

c aimed in United States Letters Patent 779,512, granted to me January 10, 1905.

It is well known that when cables are used to open and close the scoop members it is necessary to greatly multiply the power closing force end else to make the weight of the bucket excessive in order to completely fill the bucket (luring the closing operation,

and thus render the mechanism efficient. This isoccssioned li'y the fact that the pull upon the cables is necessarily exerted at a. long distance from and shove the bucket in Clem-Shell Buckets, of which itself, so that if the resistance between the 5000' members is greater than the force derive from the closin mechanism the bucket is lifted upwardly without bein completely filled unless the weight of the lane at is greatly in excess of that which it is otherwise necesssry to have. This resistance between the scoop members varies greatly at different times, depending upon the character of the work that is heing'done,so that in order to he prepared to overcome the greatest possible resistance the ower closing mechanism is necessarily me e very strong and the bucket very heavy.

By the use of a motor the greater part of.

the power closin multiples and much of the wei ht (if the buiihet are eliminated by reason of t e feet that the power to open or close the scoop members is generated upon or near the bucket itself by reason of havin the motor 'mcunted upon the frame of the ucket and connected to the operatic mechanism so that the bucket is not lifts upwardly when the resistance to the closing of its sheer: memhers is increased be end the power of the closing mechanism; ut, on the other hand, the bucket will lie with its entire Wei ht upon the material being operated upon. urthcr, by the use of a motor the operstin mechanism of the bucket is greatly sinipli cd, due to the elimination of power-wheels, cables, pulleys, &c.

I entrollv journelerl in a. frame'A is adriv big-shaft B, having secured to its respective outer projecting ends two driving-pinions I) b, Fig. 4. Mounted in the frame A upon opposite sides'of the center plane of the frame passing thrcu h the axis of the shaft B ere two rcckin shafts C'Qr'espectively parallel with shaft t. "u es tlie projecting ends of those rock shnlts erc mounted two pairs oi nppesitow-disposed oscillatory sectors (Y and if U, respectively. The members of reach pair of sectors mesh with each other, on (1 one of such members is engaged by a drivingpinion. if, so that the rotetion of this pinion wiil'rcsusc the n'icinhers of the pairs of sectors to rock in opposite directions. Two scoop members E E are provided, as shown, one on each side of the central plane of the frame. Upon the front and rear of the frame ,snd

near the top thereof on both sides of the central plane of the lrmno ere pivoted links I) I), whose other ends are pivoted to the front end of the scoop member E upon the same side. Forming s. continuation of the sectors the shafts C are at a distance less removed from the center plane of the frame than the pivotal axes of the upper ends of said links l). The advantages of this ci'mstruction will be hereinafter pointed out.

Suitably keyed to the central driving-shaft B intermediately of the pinions b is a main gear F. A motor H", Fig. .2, is provided with a suitable motorframe ll, mounted in the frame A by means of the downwardly 2o projectin arms ft h, in which the central 40 bucket when it is filled.

shaft 13 ms bearings, and the transverse shaft ll, supporting the integral arms 71 h", as plainly shown in Fig. 4. The motorshalt is designated by l 2 and is provided with suitable hearings in said frame. Said motor-shaft carries at one end a bevel-pinion ll, meshing with the bevel-gear H, keyed to the transverse shaft ll. Carried upon the latter so as to ear with the main. gear F is a pinion H". T iemotor fl is pus vided with a suitable automatic brake, (not shown) so that it will not run in a reverse direction when the bucket is filled or is empty, and also with friction devices (not shnunl tending to cause it to disengage when over loaded.

Mounted upon the top of the bucket is a suitable sheave J, which may receive a suit-- able hoistingwable adapted to elevate the The teeth of the sertors (l U, the pinions 1), main gear i and pinion ll are cast in between suitable shroudings, as plainly shown in Fig. 5, in order to increase their strength, as will be readily understood. The spaces between the teeth of the sectors 0' (.3" and the main ear F enable ore or other material to niss etween the teeth, and thus prevent them from clogging up. Various forms of motors may be utilized in my invention; but I pre for to use an electric motor because of the flexible connectionsthat it affords in distinction to the rigid connections of a pneu-- matic or hydraulic motor.

My improved bucket is operated as follows Assuming the bucket to be closed, as illustrated in Fig. 1, the front end of the scoop members will fall by gravity until the links D assume the vertical position, the rear end of the scoop members meanwhile being lifted. This action is due to the relative locations of the shafts U C and the up or ends of the links I) l), as pointed out a ove. The con-- tents i the bucket can thus be discharged with t' expenditure of a very small amount of force. 'lhe motor now being operated, the complete opening operation can be are complished, as desired, through the bevelcars if ll, pinion ll, main gear F, pinions sectors (1 (T and arms It is obvious that my iijnproved bucket Closing mechanism can be utilized upon a cable-operateil bucket in addition to its use upon one which is llliitilf-tlpelklbfid, if suitable poweruvheels, cables, and sheaves be pro-- vided therefor.

Havingdescribed my invention. in detail, that which 1 particularly point out and dis-- tinctlv claim is l. in a clam-shell bucket, the combination of a frame; a motor mounted thereon; scoop members; and means supporting and moving the latter to open and close and including oscillatory members mounted upon said frame and adapted to be actuated by said motor.

2. in a clam-shell bucket, the combination of a frame; a motor mounted thereon; scoop members; oscillatory members mounted upon said frame, adapted to be actuated by said motor, and coimected to' one end of said scoop members", and links connected to said frame and to the other end of said scoop members.

3. [n a clam-shell bucket, the combination of a frame; a motor mounted. thereon; two scoop members; operating mechanism for the latter adapted to be actuated by said motor and connected to the outer ends of said scoop members; and links pivoted to said frame and H) the inner cnds of said scoop members, res;icctivclv.

l.. In a clunh hcll bucket, the combination of a frame: a. motor mounted thereon; two scoop members; operating mechanism for the latter adapted to lH actuated by said motor and comprising a pair of opposed sectors havin; gear connections with the latter and arms connecting said sectors and the outer ends of said scoop members. respectively; and links pivoted to said frame and. to the inner ends of said scoop members, respectively.

5. In a claneshcll bucket, the combination of a frame; a motor mounted thereon; two scoop members; a pair of opposed sectors oscillatorily mounted upon sai frame; connections between said sectors and said motor; links pivoted to said frame and to the inner ends of said scoop members, respectively; and arms connecting said sectors with the outer ends of said scoop members, respectively.

6. In a clam-shell bucket, the combination of a frame; a motor mounted thereon; two scoop members; a pair of opposed sectors; connections between the latter and said motor links pivoted to said frame and to the inner ends of said scoop members, respectivel and arms connecting said sectors with t e outer ends of said scoop members, respecfr-ely, said arms being connected to said sec- TIC on: at points a loss distance removmi from the center lino of the frame. than the points at which said links are pivoted to tho frt mo.

7. In a olonvsholl bucket, the combination of a fmm'e, a motor mounted tiieioo 1; two scoop members upon oppositosidos of tho oonter plane of the frame; a pair of opposed sectors mounted upon said frame upon opposite sides thereof; connections betww n said sectors and said motor; links pivoted to said frame and to the inner ends of said scoop members, respectively, upon the so no sido; and arms connecting said sectors with tho ontor ends of said scoop n'lmnbms, respectively, upon the some side.

8. in a clam-shall buckot the oombimztion of a, frame; a, motor nu'iuntod thereon; two scoop members: upon opposite sides of the oontoi' piano oi the frame: it pair oi opposed sectors mounted upon said frame upon opposite sides thereof; connections between said sectors and said motor; links pivoted to said frame and to the inner Ehfiio of mid scoop membrs, rospootivel upon the some side; and arms connecting Said sectors Wii-ii tiio .outer ends of said scoop members respontiveiy', upon tho 5mm: skin; said arms br ng Co'nnootod to so iii si fii flif at points a ioss oisw toxic-o reinovui fr iih sontoi' on? oi frame tin: 2 till pail it which iii i'ii'liS on pivoted o time. Pain 9. in a oiam-siwii imokot the combination of a frame; two sootors monoiod upon said nwmbers, respectively, upon the some side;

and arms connecting said sectors and tho outer ends of Smti sooo members, respootivoly, upoo tho some EH16, said arms; being oonnootod to said soitors at points a. ioss dis tonne removed from the canto! line of the imme than the points at WiLiCibSELi links are pivoted to the ironic.

i!)v in :1 slam-shell bucket, the oombina tion of a immo; a )air of scoop members upon op iooito sides of tin: cantor line of said frame iiniis pivoted to said frame and to the inner ends of said scoop members, respectively, upon tiio some side; a paiiof osciiisitory menii3OI'S pivoted to said frame and connected to tho outer ends of said scoo members, rospectiveiy, upon the some side, the pivotal points of said oscillatory moniiiors upon said mime bein r at a distance loss removed from the #IGIbtl-El' iino of'tho frame than the pivotoi points of said iinks gpon the frame; and a. motor mounted upon the frame @1116 adopted to fipifiilifi aaiil osciiiatorv members.

iiigood by 1m this 15th day 0? 'ioroh, 190 5. GUKDON ii iLRiAitiS.

At tmst 7 Jno F. Uniamm, G. W. Snwnu. 

